SpaceAtlas Space Object Data
NASA JPL SBDB · 2017 DQ15

2017 DQ15

2017 DQ15 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 2.794 AU it takes 4.67 yr to circle the Sun.

Apollo Observations: 46
Orbital Period · P
4.67 yr
v(q)
45.7 km/s
v(Q)
7 km/s
Diameter · ≈
0.47 km
TJ
2.79
Eccentricity · e
0.7357

Orbit and dynamics

The path is an ellipse reaching 0.738 AU from the Sun at perihelion and 4.85 AU at aphelion, a radial span of 4.112 AU.

Applying Kepler's third law to a = 2.794 AU gives an orbital period of 4.67 yr, or about 1,706 days.

The high eccentricity (0.736) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

A steep inclination of 20.5° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 45.7 km/s at perihelion and falls to 7 km/s at aphelion.

Because q < 1 AU and Q > 1 AU, this orbit geometrically intersects the region of Earth's orbit.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 19.4 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.47 km.

Observation record and orbit quality

The current orbit solution is based on 46 observations and has a weighted RMS residual of 0.5286 arcseconds.

Condition code U = 5 indicates a moderately constrained orbit; predictions decades ahead still carry noticeable uncertainty.

About these computed values

Orbital periods, perihelion and aphelion speeds, and diameter estimates on this page are computed by SpaceAtlas from the JPL SBDB orbital elements. They are derived quantities, not values copied from the source catalogue.

Orbital Parameters

Semi-Major Axis
2.794 AU
Eccentricity
0.7357
Perihelion
0.738 AU
Aphelion
4.849546 AU
Inclination
20.5°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
327.67°

Orbit diagram

The Sun sits at the focus (orange). Earth's orbit is the grey circle at 1 AU. The red dot marks the object's position at the catalog epoch.

3D orbit (interactive)

Drag to rotate; scroll or pinch to zoom. The Sun is at the focus (orange), Earth's orbit is the grey ring at 1 AU, and the red dot marks the object's current position.

Close approaches

Predicted close approaches to Earth, from NASA's Center for Near-Earth Object Studies (CNEOS).

Date (UTC)Miss distanceVelocity
2031-Aug-04 18:21 0.262238 AU
39230178 km
20.78 km/s
2045-Sep-08 18:31 0.412757 AU
61747550 km
29.57 km/s
2059-Sep-06 17:45 0.338800 AU
50683717 km
27.99 km/s

Distances in astronomical units (AU) and kilometres. Source: NASA/JPL CNEOS Close Approach Data API.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
19.4

Orbit Quality

RMS
0.52856
Condition
5
Orbit ID
—
Data source: NASA JPL Small-Body Database · NASA CNEOS. Orbital periods, perihelion and aphelion speeds, and diameter estimates on this page are computed by SpaceAtlas from the JPL SBDB orbital elements. They are derived quantities, not values copied from the source catalogue.

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